:root {
  --ink: #0d1b2a;
  --accent: #4f6ef7;
  --accent-bright: #6b86ff;
  --surface: #f8f9fa;
  --muted: #6b7280;
  --line: #e5e7eb;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, system-ui, sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.container-x {
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(229, 231, 235, 0.85);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

.site-nav-inner {
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-word {
  font-family: "DM Sans", Inter, system-ui, sans-serif;
  font-size: 1.22rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.logo-badge {
  border: 1px solid var(--line);
  padding: 0.12rem 0.35rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  color: var(--muted);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-compact {
  font-size: 0.86rem;
  color: var(--muted);
}

.doc-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
}

.doc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 70% 62% at 50% 35%, #000 35%, transparent 82%);
}

.doc-hero-inner {
  position: relative;
  display: grid;
  gap: 2rem;
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.eyebrow {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.headline {
  margin: 1.25rem 0 0;
  font-family: "DM Sans", Inter, system-ui, sans-serif;
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 0.96;
  font-weight: 300;
  letter-spacing: 0;
}

.doc-hero p {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1.05rem;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 500;
  line-height: 1;
}

.btn-primary-light {
  color: var(--ink);
  background: #fff;
}

.btn-ghost-light {
  color: rgba(255, 255, 255, 0.86);
  border-color: rgba(255, 255, 255, 0.18);
}

.hero-panel {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  padding: 1rem;
}

.hero-panel-label {
  margin: 0 0 0.65rem;
  color: rgba(255, 255, 255, 0.42);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
}

.hero-panel code {
  display: block;
  overflow-wrap: anywhere;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.85rem;
  color: rgba(255, 255, 255, 0.78);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.78rem;
}

.doc-shell {
  display: grid;
  gap: 2rem;
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.doc-sidebar {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 1rem;
  align-self: start;
}

.doc-sidebar-title {
  margin: 0 0 0.8rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--muted);
}

.doc-sidebar nav {
  display: grid;
  gap: 0.25rem;
}

.doc-sidebar a {
  display: block;
  padding: 0.65rem 0.75rem;
  font-size: 0.94rem;
  color: var(--muted);
}

.doc-sidebar a.active,
.doc-sidebar a:hover {
  color: #fff;
  background: var(--ink);
}

.doc-content {
  min-width: 0;
}

.doc-content h1,
.doc-content h2,
.doc-content h3 {
  font-family: "DM Sans", Inter, system-ui, sans-serif;
  letter-spacing: 0;
}

.doc-content h1 {
  margin-top: 0;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1;
  font-weight: 300;
}

.doc-content h2 {
  margin-top: 2.5rem;
  font-size: 1.65rem;
}

.doc-content h3 {
  margin-top: 2rem;
  font-size: 1.2rem;
}

.doc-content p,
.doc-content li {
  color: var(--muted);
  line-height: 1.78;
  font-size: 1rem;
}

.doc-content a {
  color: var(--accent);
  border-bottom: 1px solid rgba(79, 110, 247, 0.28);
}

.doc-content pre {
  overflow-x: auto;
  border: 1px solid rgba(13, 27, 42, 0.12);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.82);
  padding: 1rem;
}

.doc-content code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.86em;
}

.doc-content :not(pre) > code {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 0.08rem 0.26rem;
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.62);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
  font-size: 0.9rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.82);
}

.root-choice {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  text-align: center;
}

@media (min-width: 768px) {
  .container-x {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .nav-links {
    display: flex;
  }

  .nav-compact {
    display: none;
  }

  .doc-hero-inner {
    grid-template-columns: 1fr 0.75fr;
    align-items: end;
  }

  .doc-shell {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}